Gas burner for space heating



Oct. 14, 1958 L. c. SASSMANHAUSEN GAS BURNER FOR SPACE' HEATING OriginalFiled June 8, 1949 .n. Ill-Bl INVEN TOR. Lee C Jassmonhausen UnitedStates Patent GAS BURNER FOR SPACE HEATING Lee C. Sassrnanhausen,Warren, Ohio Original application June 8, 1949, Serial No. 97,836, nowPatent No. 2,694,445, dated November 16, 1954. Divided and thisapplication September 17, 1954, Serial No. 456,722

1 Claim. 01. 158-413) This invention relates to a gas burner and it hasto do particularly with a gas burner for space heating purposes.

This application is a division of copending application of thisinventor, Serial No. 97,836, filed June 8, 1949, now Patent No.2,694,445, dated November 16, 1954. The gas burner structure of thepresent invention is admirably adapted as a conversion burner in thesense that it may be installed in a furnace which, previous thereto, wasarranged to consume a different type of fuel, such as coal or oil, orthe burner of the present invention may be used as a replacement foranother gas burner. On the other hand, the burner of the presentinvention, and particularly some of the features thereof, may beemployed with original equipment.

The general objects of the invention are to provide a simplified lightweight burner and burner structure which can be manufacturedeconomically so that the retail cost thereof may be reflected in theprice to the ultimate purchaser and user. Due to its light weight it maybe easily and economically transported. In connection with the weight ofthe structure, it may be pointed out that heavy metal castings are verylargely dispensed with and in place thereof parts are fabricated fromsheet metal with some parts of tubular form. Further, in accordance withthe invention, heavy ceramic materials are avoided.

A furnace structure made in accordance with the invention is shown inthe accompanying drawings:

Fig. 1 is a side elevational view of a burner constructed in accordancewith the invention showing the same mounted in a furnace with some ofthe furnace structure shown in broken lines.

Fig. 2 is a view in section taken substantially on line 22 of Fig. 1illustrating the burner tube and deflector plate.

Fig. 3 is an enlarged cross sectional view taken substantially on line3-3 of Fig. 2 showing a mounting for the deflector plate.

The support for the burner advantageously comprises a member 1 and across piece 2 provided with floor engaging screw threaded studs 3 whichare threaded into the cross support and the inner end 5 of the member 1and which may be locked in position by nuts 4.

As shown in Fig. 1, a portion of a furnace is illustrated at 8 and thesupport is disposed to lie partially within an area 9 within thefurnace. This is the lower part of the furnace and if the furnacepreviously used coal, the area 9 could have been the ash pit. The formergrate level of the furnace is indicated at about the broken line 10while the combustion chamber is illustrated at 11. The compartment 9 isto be closed and this may be done by two sheet metal members 13 and 14secured together in their central portion by screws 15.

The mixing tube is shown in Fig. 1 as having an outer tube 20 providedwith secondary air openings 21, primary air openings 22 and a gas jetmember. The element 20 contains a suitable venturi, not shown, and isdesigned to telescopingly receive the main burner tube 45 which issomewhat of L shape so that its free end extends upwardly as shown. Theburner tube supports a bafile or deflector 50 preferably in the form ofa pan shaped stamping of heat resisting metal such as one of thestainless steels. For this purpose there is a spider structure 51 (Fig.2) which rests on top of the tube 45. The outer ends of the legs of thespider are turned downwardly as indicated and are secured to a ring orcollar 52 to support the same in spaced relationship with the tube 45,thus providing an air passage space 53.

A post or rod 55 supports the deflector and is secured to the centerpart of the spider by nuts 54. An inverted socket 56 is secured to thecenter of the deflector for fitting over the top of rod 55. These partsadvantageously rest upon the top of the tube by gravity so that they maybe easily installed from a knocked down condition. To reinforce thestructure a second spider 57 is arranged for the post 55 to passtherethrough and the ends of its legs as at 58 are secured as by meansof welding to the collar 52. Since the spider 51 is depressed, the twospiders engage the post 55 at spaced points.

The described mixer tube and burner tube assembly is mounted on thesupport for which purpose the body member of the support is providedwith a number of U-shaped brackets each shown at 60, and a series ofclamps 61 (Fig. 1)' are engaged around the exterior tubular form and arepassed through the U-shaped brackets and tightened each by a screw (notshown). The two clamps 61 disposed within the furnace chamber 9 engagethe tube 45 while the exterior clamp 61 engages the outer tube 20 and isof slightly larger size. The structure is disposed as shown in Fig. 1,with the tube 20 and the frame member 1 passing through the enclosingplates 13 and 14 with the parts so positioned that the secondary airapertures 21 are disposed just outside the closure plates 13 and 14.

As more fully disclosed in my above mentioned patent, a pilot burnerwhereat a pilot flame 86 burns is supported adjacent the main burner.The pilot burner support has a struck out hook 81 which slidably fitsover a track 70 whose inner end is mounted on tube 45 by a clamp 71. Theextreme inner end of the track is folded back upon itself to provide abook 72 to facilitate positioning the pilot burner support. Track 70 hasan inclined intermediate portion 73 and extends out of the burnerenclosure through plates 13 and 14. The outer I end of the track issupported by a bracket 74 carried by support member 1. The pilot burnercan be removed from and replaced in the burner chamber by sliding hook81 outwardly and inwardly on track 70.

The operation is as follows: the fuel gas is projected in the form of ajet from a jet member into tube 20 and the venturi action therein causesa draft of air to enter the primary air ports 22 so that the propercombustible mixture of gas and air is obtained therein. This mixturepasses into the tube 45 and upwardly where the flame burns at the upperand outlet end of the pipe 45. The flame thus burning upwardly strikesthe diverter or bafile 50 and is spread outwardly in all directions inthe fire box or fire chamber 11. Of course, suitable controls may beused for automatically governing the inlet of the gas but the controlsconstitute a separate art. 4

Secondary air is supplied to the flame through the control ports 21located just outside the plates 13 and 14. The secondary air passes intothe furnace chamber 9 and then upwardly by the convection currents. Someof this air passes through the space 53 and is guided in its upwardmovement by the guard or collar 52 and brought into direct supportingrelationship with the combustible mixture at the upper end of the tube45 with the result that combustion occurs in a region generally adjacentthe periphery of the baflle 50 and abcve the heme, 111915112X a a 4 Iproviding-a difuse flatne efiieient for space heating purposes.

I claim:

In a gas burner for use viiith a heating furnace, a burner tubeihavinganupw'ardlylextending open end for t the ,dis- 'ehargeiof ,a ,,cqrnbustible 'gaseous mixture, a spider-like -element-at;the open;end ofthe burner tube, said element having a plurality of radial legs withdepressed central portions slidably fitting within the open end oftheburner tube, said element having, other radial legs secured to the firstmentioned [legsand lying in a planespaced from the saiddepressedportions thereof, at least one set of legs extendingradially-outwardly from theburner tube and resting on the top endthereof, acollarcarriedby the outwardlyextendingfllegsand extendingaround the open Tend Qf the burner tube,'saidjcp1lar projecting bothabove -and;,b e 1ow the level of,the open end to thereby define apassageway surroundingthe open end of the tube for the-passageofsecondary'air therethrough, said spider being References Citedin the file of this patent UNITED STATES PATENTS 1,561,848 Green Nov.17, 1925 2,389,027 Corbin Nov. 13, 1945 2,430,688 Schickler Nov. 11,1947 2,434,627 Schickler Jan. 13, 1948 2,475,240 Hassmer July 5, 19492,497,321 Pattinson Feb. 14, 1950 Warnecke Dec. 4, 1956

